Index: /de/geraete/diehl-combitronic.shtm =================================================================== --- /de/geraete/diehl-combitronic.shtm (revision 72) +++ /de/geraete/diehl-combitronic.shtm (revision 73) @@ -2,9 +2,9 @@ "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> -
+It is quite interesting to see DIEHL improving quite slowly but
+ continuing their hardware: The successor model DIEHL Algotronic
+ (1973/74) featured 2x 21 shift registers with each 512 bits storage
+ capacity instead of the magnetic wire storage. Thus the device had
+ about 20 kbit storage capacity, so the metallic boot tape could be
+ extended: The new paper tape had 3 tracks (including one timing track).
+ While the first track was read in while moving the tape forward, the
+ second one was read in while rewinding the tape. This "boot device"
+ contained micro programs for scientifical functions (sin, cos, tan,
+ ln, exp, etc.). If the computer was intended for e.g. statistical
+ functions, it needed another boot tape.
+
These Diehl computers look like the Combitronic, but they are
+ equipped with a few more keys. All in all the hardware architecture
+ from this desk computer was obsolete, even for that time. It was
+ partily still made using germanium transistors. After these computers,
+ Diehl divided the computer construction division off to Japan.
+ They built a completely new computer that is no more interesting for
+ our museum.